package com.zzyl.serve.service.impl;

import java.util.List;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.ObjectUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import com.zzyl.serve.mapper.NursingLevelMapper;
import com.zzyl.serve.domain.NursingLevel;
import com.zzyl.serve.service.INursingLevelService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import java.util.Arrays;

/**
 * 护理等级Service业务层处理
 *
 * @author howstrong
 * @date 2024-10-04
 */
@Service
@Slf4j
public class NursingLevelServiceImpl extends ServiceImpl<NursingLevelMapper, NursingLevel> implements INursingLevelService {
    @Autowired
    private NursingLevelMapper nursingLevelMapper;

    @Autowired
    private RedisTemplate redisTemplate;

    // 定义常量
    private static final String REDIS_CACHE_LEVEL_ALl_KEY = "nursing:level:all";

    /**
     * 查询护理等级
     *
     * @param id 护理等级主键
     * @return 护理等级
     */
    @Override
    public NursingLevel selectNursingLevelById(Long id) {
        return getById(id);
    }

    /**
     * 查询护理等级列表
     *
     * @param nursingLevel 护理等级
     * @return 护理等级
     */
    @Override
    public List<NursingLevel> selectNursingLevelList(NursingLevel nursingLevel) {
        return nursingLevelMapper.selectNursingLevelList(nursingLevel);
    }

    /**
     * 新增护理等级
     * TODO 清理缓存
     *
     * @param nursingLevel 护理等级
     * @return 结果
     */
    @Override
    public int insertNursingLevel(NursingLevel nursingLevel) {
        int result = save(nursingLevel) ? 1 : 0;

        if (result == 1) {
            // 清理缓存
            redisTemplate.delete(REDIS_CACHE_LEVEL_ALl_KEY);
        }

        return result;
    }

    /**
     * 修改护理等级
     *
     * @param nursingLevel 护理等级
     * @return 结果
     */
    @Override
    public int updateNursingLevel(NursingLevel nursingLevel) {
        int result = updateById(nursingLevel) ? 1 : 0;

        if (result == 1) {
            // 清理缓存
            redisTemplate.delete(REDIS_CACHE_LEVEL_ALl_KEY);
        }

        return result;
    }

    /**
     * 批量删除护理等级
     *
     * @param ids 需要删除的护理等级主键
     * @return 结果
     */
    @Override
    public int deleteNursingLevelByIds(Long[] ids) {
        int result = removeByIds(Arrays.asList(ids)) ? 1 : 0;

        if (result == 1) {
            // 清理缓存
            redisTemplate.delete(REDIS_CACHE_LEVEL_ALl_KEY);
        }

        return result;
    }

    /**
     * 删除护理等级信息
     *
     * @param id 护理等级主键
     * @return 结果
     */
    @Override
    public int deleteNursingLevelById(Long id) {

        int result = removeById(id) ? 1 : 0;

        if (result == 1) {
            // 清理缓存
            redisTemplate.delete(REDIS_CACHE_LEVEL_ALl_KEY);
        }

        return result;
    }

    /**
     * 查询所有护理等级
     * <p>
     * TODO 添加Redis缓存优化逻辑
     *
     * @return
     */
    @Override
    public List<NursingLevel> getAll() {

        // 1.从缓存中获取数据
        List<NursingLevel> list = (List<NursingLevel>) redisTemplate.opsForValue().get(REDIS_CACHE_LEVEL_ALl_KEY);
        // 2.如果缓存中有数据，则直接返回数据
        if (ObjectUtils.isNotEmpty(list)) {
            log.info("-----------[Redis]------------缓存命中, 从缓存中获取数据");
            return list;
        }

        // 3.如果缓存中没有数据，则从数据库中查询数据
        // 查询启用状态的护理等级
        LambdaQueryWrapper<NursingLevel> lqw = new LambdaQueryWrapper<NursingLevel>()
                .eq(NursingLevel::getStatus, 1);
        list = list(lqw);

        // 4.将查询到的数据添加到缓存中
        redisTemplate.opsForValue().set(REDIS_CACHE_LEVEL_ALl_KEY, list);

        log.info("-----------[MySQL]------------缓存未命中, 从数据库中获取数据");

        return list;
    }
}
